Bolt assembly with improved rotating locking head
a technology of rotating locking head and bolt assembly, which is applied in the direction of breech mechanism, weapon components, weapon parts, etc., can solve the problems of not easy to lock the bolt with a slow and quiet motion, lack of residual energy of the rotating head, and in fact have shown some anomalies in operation, so as to achieve reliable and safe operation
Active Publication Date: 2014-09-11
BENELLI ARMI
View PDF2 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The technical effects of this patent text are two-fold. Firstly, it aims to provide a bolt assembly that requires no additional maintenance beyond what is already provided for traditional bolts. Secondly, it aims to provide a bolt assembly that is reliable and safe.
Problems solved by technology
Conventional rotating head bolts, applied to hunting rifles, in fact have shown some anomalies in operation due to particular situations that can occur during hunting activities.
An additional problem of such action is that, in general, it is not easy to lock the bolt with a slow and quiet motion, because the rotating head tends to stop in the position that corresponds to the entry plane of the seats provided in the barrel, without completing the locking, because the lugs or lugs of the rotating head are not aligned with said seats.
This occurs because the rotating head lacks the residual energy to complete the rotation and translation needed to allow the insertion of the lugs in the seats of the barrel.
Such problem may occur if the hunter wishes, for example, to change the cartridge to adapt it to the target that becomes available and must do so silently to avoid startling the animal.
However, the hunter might be unable to re-load the firearm with a slow and consequently silent motion and might be forced to push the bolt sharply into the locking position, thus startling the animal and causing the target to flee.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0030]With reference to the cited figures, the rotating head bolt assembly with improved locking, according to the invention, generally designated by the reference numeral 1, comprises a rotating locking head 2, which comprises a cylindrical head 3 and a shaft 4.
[0031]The shaft 4 of the rotating head slides in a longitudinal hole 6 of the bolt body 5 and is kept in an inactive position by means of a pin 7 that is engaged in a notch formed in the shaft 4; the notch has a rear surface 8 and a front surface 9, where the terms rear and front refer to the position relative to the breech.
[0032]The shaft 4 has a radial pivot 10, which engages a helical cam groove 11, formed in the bolt body, imparting a rotary motion to the locking head when it translates in an axial direction.
[0033]The cylindrical head 3 is provided with lugs 12, which are arranged radially and form a single front locking plane 13.
[0034]The lugs 12 engage corresponding radial seats 14 provided in the rear extension of the...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A bolt assembly with improved rotating locking head, comprising a rotating locking head associated with a bolt body and movable with respect to the bolt body with a combined rotary and translational motion; the rotating locking head having at least two working positions: a closed position, wherein the rotating head closes the breech of the firearm, and an open position, wherein the rotating head is at a distance from the breech; the bolt assembly has an auxiliary pusher that biases the rotating head from the open position to the closed position.
Description
BACKGROUND OF THE INVENTION[0001]The present invention relates to a bolt assembly with improved rotating locking head.[0002]Rotating bolts are found in gas-operated, recoil-operated, bolt action, lever-action and pump-action weapon designs.[0003]A rotating bolt typically comprises a rotating head provided with lugs or radial lugs that engage seats provided in the barrel extension.[0004]Generally, the rotating head can move with respect to the body of the bolt by means of a system with a pivot and a helical cam that imparts a combined rotary and translational motion to the rotating head.[0005]Systems are known in which the helical cam is formed in the rotating head and others are known in which the helical cam is formed in the body of the bolt and engages a radial pivot that is integral with the bolt body, in the first case, and integral with the rotating head, in the second case.[0006]EP0128125 discloses a bolt assembly of the type described above which has had, and continues to hav...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): F41A3/16
CPCF41A3/16F41A3/20F41A3/26
Inventor MORETTI, LUIGI
Owner BENELLI ARMI